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Top Forums Shell Programming and Scripting sed optimized for replace substring Post 302721129 by gio123bgg on Thursday 25th of October 2012 07:49:42 AM
Old 10-25-2012
sed optimized for replace substring

Hi All,
I have this text file

Code:
 IR7013903069171012INT10171211864
 Axxxxxxxxxx12345dddddddddddd
 Byyyyyyyyy99999999ddddddddd
 IR7013903069171012TOS10171211865
 Cffffffffff5745747ehdefffffffffgggggggg
 Dyyyyyyyyy99999999ddddddddd

I need to
1) find lines where the substring IR70139 is present
2) only in the lines selected by the point 1, I need to replace the substring INT and TOS by SFD

I have used this command

Code:
cat <input filename>| grep IR70139 | sed s/INT/SFD/  > output_file

Is there a better command line to execute my command?

For example
Code:
sed /search string1/,/search string2/ {  s/INT/SFD/  s/TOS/SFD/ } < inputfile > outputfile

I have tried but without success.

Any help will be well appreciated.

Thanks in advance for your kind support.

Regards,

Giovanni

Moderator's Comments:
Mod Comment Please use code tags for code and data, thanks

Last edited by Scrutinizer; 10-25-2012 at 08:51 AM.. Reason: code tags
 

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EMPTY-PAGE(1)							 ExactImage Manual						     EMPTY-PAGE(1)

NAME
empty-page - empty page detector of the ExactImage toolkit SYNOPSIS
empty-page [option...] {-i | --input} input-file empty-page {-h | --help} DESCRIPTION
ExactImage is a fast C++ image processing library. Unlike many other library frameworks it allows operation in several color spaces and bit depths natively, resulting in low memory and computational requirements. empty-page counts dark pixels of a black and white image and decides with a threshold whether the page is most probably empty, and thus can be removed from the image processing stream. OPTIONS
-i file, --input file Read image from the specified file. -m n, --margin n Set width of border margin to skip. For speed reasons, the margin has to be a multiple of 8. The default is 16. -p x, --percentage x Set fraction of permissible dark pixels. The default is 0.05 (5%). -h, --help Display help text and exit. EXAMPLES
$ empty-page -i test.tif The image has 75461 dark pixels from a total of 1060992 (7.11231%). non-empty EXIT STATUS
The exit status is 0 if the image is mostly white, 1 otherwise. SEE ALSO
exactimage(7) AUTHORS
Jakub Wilk <jwilk@debian.org> Wrote this manual page for the Debian system. http://www.exactcode.de/site/open_source/exactimage/ This manual page incorporates texts found on the ExactImage homepage. COPYRIGHT
This manual page was written for the Debian system (and may be used by others). Permission is granted to copy, distribute and/or modify this document under the terms of the GNU General Public License, Version 2 or (at your option) any later version published by the Free Software Foundation. On Debian systems, the complete text of the GNU General Public License can be found in /usr/share/common-licenses/GPL-2. empty-page 09/09/2013 EMPTY-PAGE(1)
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